CN114337948A - Reference signal configuration method, antenna switching method, device and storage medium - Google Patents
Reference signal configuration method, antenna switching method, device and storage medium Download PDFInfo
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Abstract
The invention discloses a reference signal configuration method, an antenna switching method, a device and a storage medium, wherein the reference signal configuration method comprises the following steps: configuring a set of SRS resources for antenna switching; wherein the SRS resource set includes: n SRS resources; and N is a positive integer greater than or equal to 1.
Description
Technical Field
The present invention relates to the wireless field, and in particular, to a reference signal configuration method, an antenna switching method, an apparatus, and a storage medium.
Background
In recent years, in a New Radio (NR) system, in order to support a terminal (UE) whose number of transmission antennas is less than that of reception antennas, downlink channel information can be obtained by using channel reciprocity, a channel Sounding Reference Signal (SRS) antenna switching transmission method has been designed for NR. How to configure SRS resources for a terminal so that the terminal performs antenna switching is a problem that needs to be solved at present.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a reference signal configuration method, an antenna switching method, an apparatus and a storage medium.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the embodiment of the invention provides a reference signal configuration method, which is applied to a base station and comprises the following steps:
configuring a set of channel Sounding Reference Signal (SRS) resources for antenna switching; the set of SRS resources comprising: n SRS resources; and N is a positive integer greater than or equal to 1.
In the foregoing scheme, the N SRS resources include: a first SRS resource and a second SRS resource;
the first SRS resource includes: at least two first ports; the second SRS resource comprising: at least two second ports.
In the foregoing scheme, the first SRS resource includes: four SRS ports; the second SRS resource comprising: four SRS ports.
In the above scheme, the SRS resource set is for six antenna ports;
the first set of SRSs comprising: a first port combination; the first port combination comprises: four first SRS ports selected from the six antenna ports;
the second set of SRSs comprising: a second port combination; the second port combination comprises: four second SRS ports selected from the six antenna ports;
selecting the second port combination from at least one port combination to be selected through configuration of Radio Resource Control (RRC), media access control (MAC CE) or downlink control signaling (DCI);
and each port combination to be selected and the first port combination have at least one different port.
In the above scheme, the method further comprises:
determining Channel State Information (CSI) corresponding to the same port of the at least two first ports and the at least two second ports based on the first SRS and the second SRS; wherein the first SRS is transmitted based on the at least two first ports; the second SRS is transmitted based on the at least two second ports.
In the foregoing scheme, the N SRS resources include: a third SRS resource and a fourth SRS resource; the third SRS resource comprising: at least two third ports; the fourth SRS resource including: at least two fourth ports;
the number of the third ports is an integral multiple of the number of the fourth ports.
In the above scheme, the third SRS resource includes four SRS ports; the fourth SRS resource includes two SRS ports.
In the foregoing solution, the transmission power corresponding to the third SRS resource is an integer multiple of the transmission power corresponding to the fourth SRS resource.
In the foregoing scheme, the N SRS resources include: a fifth SRS resource, a sixth SRS resource, a seventh SRS resource;
the number of ports included in the fifth SRS resource, the number of ports included in the sixth SRS resource, and the number of ports included in the seventh SRS resource are equal, and the ports included in the fifth SRS resource, the ports included in the sixth SRS resource, and the ports included in the seventh SRS resource are respectively associated with different antenna ports of a terminal.
In the foregoing solution, the fifth SRS resource includes two SRS ports; the sixth SRS resource includes two SRS ports; the seventh SRS resource includes two SRS ports.
The embodiment of the invention provides an antenna switching method, which is applied to a terminal and comprises the following steps:
transmitting an SRS according to an SRS resource set for antenna switching; the set of SRS resources comprising: n SRS resources; and N is a positive integer greater than or equal to 1.
In the foregoing scheme, the N SRS resources include: a first SRS resource and a second SRS resource;
the first SRS resource includes: at least two first ports; the second SRS resource comprising: at least two second ports.
In the foregoing scheme, the first SRS resource includes: four SRS ports; the second SRS resource comprising: four SRS ports.
In the above scheme, the SRS resource set is for six antenna ports;
the first set of SRSs comprising: a first port combination; the first port combination comprises: four first SRS ports selected from the six antenna ports;
the second set of SRSs comprising: a second port combination; the second port combination comprises: four second SRS ports selected from the six antenna ports;
the second port combination is selected from at least one port combination to be selected through configuration of RRC, MAC CE or DCI;
and each port combination to be selected and the first port combination have at least one different port.
In the above scheme, the method further comprises:
transmitting a first SRS and a second SRS; wherein the first SRS is transmitted based on the at least two first ports; the second SRS is transmitted based on the at least two second ports; the first SRS and the second SRS are used for determining CSI corresponding to the same port of the at least two first ports and the at least two second ports.
In the foregoing scheme, the N SRS resources include: a third SRS resource and a fourth SRS resource; the third SRS resource comprising: at least two third ports; the fourth SRS resource including: at least two fourth ports;
the number of the third ports is an integral multiple of the number of the fourth ports.
In the above scheme, the third SRS resource includes four SRS ports; the fourth SRS resource includes two SRS ports.
In the foregoing solution, the transmission power corresponding to the third SRS resource is an integer multiple of the transmission power corresponding to the fourth SRS resource.
In the foregoing scheme, the N SRS resources include: a fifth SRS resource, a sixth SRS resource, a seventh SRS resource;
the number of ports included in the fifth SRS resource, the number of ports included in the sixth SRS resource, and the number of ports included in the seventh SRS resource are equal, and the ports included in the fifth SRS resource, the ports included in the sixth SRS resource, and the ports included in the seventh SRS resource are respectively associated with different antenna ports of a terminal.
In the foregoing solution, the fifth SRS resource includes two SRS ports; the sixth SRS resource includes two SRS ports; the seventh SRS resource includes two SRS ports.
The embodiment of the invention provides a reference signal configuration device, which is applied to a base station and comprises the following components:
a configuration module, configured to configure a set of channel Sounding Reference Signal (SRS) resources for antenna switching; the set of SRS resources comprising: n SRS resources; and N is a positive integer greater than or equal to 1.
In the foregoing scheme, the N SRS resources include: a first SRS resource and a second SRS resource;
the first SRS resource includes: at least two first ports; the second SRS resource comprising: at least two second ports.
In the foregoing scheme, the first SRS resource includes: four SRS ports; the second SRS resource comprising: four SRS ports.
In the above scheme, the SRS resource set is for six antenna ports;
the first set of SRSs comprising: a first port combination; the first port combination comprises: four first SRS ports selected from the six antenna ports;
the second set of SRSs comprising: a second port combination; the second port combination comprises: four second SRS ports selected from the six antenna ports;
selecting the second port combination from at least one port combination to be selected through configuration of RRC, MAC CE or DCI;
and each port combination to be selected and the first port combination have at least one different port.
In the above scheme, the apparatus further comprises: the processing module is used for determining CSI corresponding to the same port of the at least two first ports and the at least two second ports based on the first SRS and the second SRS; wherein the first SRS is transmitted based on the at least two first ports; the second SRS is transmitted based on the at least two second ports.
In the foregoing scheme, the N SRS resources include: a third SRS resource and a fourth SRS resource; the third SRS resource comprising: at least two third ports; the fourth SRS resource including: at least two fourth ports;
the number of the third ports is an integral multiple of the number of the fourth ports.
In the above scheme, the third SRS resource includes four SRS ports; the fourth SRS resource includes two SRS ports.
In the foregoing solution, the transmission power corresponding to the third SRS resource is an integer multiple of the transmission power corresponding to the fourth SRS resource.
In the foregoing scheme, the N SRS resources include: a fifth SRS resource, a sixth SRS resource, a seventh SRS resource;
the number of ports included in the fifth SRS resource, the number of ports included in the sixth SRS resource, and the number of ports included in the seventh SRS resource are equal, and the ports included in the fifth SRS resource, the ports included in the sixth SRS resource, and the ports included in the seventh SRS resource are respectively associated with different antenna ports of a terminal.
In the foregoing solution, the fifth SRS resource includes two SRS ports; the sixth SRS resource includes two SRS ports; the seventh SRS resource includes two SRS ports.
The embodiment of the invention provides an antenna switching device, which is applied to a terminal and comprises:
a sending module, configured to send an SRS according to an SRS resource set used for antenna switching; the set of SRS resources comprising: n SRS resources; and N is a positive integer greater than or equal to 1.
In the foregoing scheme, the N SRS resources include: a first SRS resource and a second SRS resource;
the first SRS resource includes: at least two first ports; the second SRS resource comprising: at least two second ports.
In the foregoing scheme, the first SRS resource includes: four SRS ports; the second SRS resource comprising: four SRS ports.
In the above scheme, the SRS resource set is for six antenna ports;
the first set of SRSs comprising: a first port combination; the first port combination comprises: four first SRS ports selected from the six antenna ports;
the second set of SRSs comprising: a second port combination; the second port combination comprises: four second SRS ports selected from the six antenna ports;
the second port combination is selected from at least one port combination to be selected through configuration of RRC, MAC CE or DCI;
and each port combination to be selected and the first port combination have at least one different port.
In the foregoing scheme, the sending module is configured to send a first SRS and a second SRS; wherein the first SRS is transmitted based on the at least two first ports; the second SRS is transmitted based on the at least two second ports; the first SRS and the second SRS are used for determining CSI corresponding to the same port of the at least two first ports and the at least two second ports.
In the foregoing scheme, the N SRS resources include: a third SRS resource and a fourth SRS resource; the third SRS resource comprising: at least two third ports; the fourth SRS resource including: at least two fourth ports;
the number of the third ports is an integral multiple of the number of the fourth ports.
In the above scheme, the third SRS resource includes four SRS ports; the fourth SRS resource includes two SRS ports.
In the foregoing solution, the transmission power corresponding to the third SRS resource is an integer multiple of the transmission power corresponding to the fourth SRS resource.
In the foregoing scheme, the N SRS resources include: a fifth SRS resource, a sixth SRS resource, a seventh SRS resource;
the number of ports included in the fifth SRS resource, the number of ports included in the sixth SRS resource, and the number of ports included in the seventh SRS resource are equal, and the ports included in the fifth SRS resource, the ports included in the sixth SRS resource, and the ports included in the seventh SRS resource are respectively associated with different antenna ports of a terminal.
In the foregoing solution, the fifth SRS resource includes two SRS ports; the sixth SRS resource includes two SRS ports; the seventh SRS resource includes two SRS ports.
The embodiment of the invention provides communication equipment, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the steps of any reference signal configuration method executed by the base station side when executing the program; alternatively, the first and second electrodes may be,
the processor implements the steps of any of the antenna switching methods performed on the terminal side above when executing the program.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of any one of the reference signal configuration methods executed by the above base station side; alternatively, the first and second electrodes may be,
the computer program, when executed by a processor, implements the steps of any of the antenna switching methods described above as being performed on the terminal side.
The embodiment of the invention provides a reference signal configuration method, an antenna switching method, a device and a storage medium, wherein the method comprises the following steps: a base station configures an SRS resource set for antenna switching; wherein the SRS resource set includes: n SRS resources; n is a positive integer greater than or equal to 1; the terminal sends the SRS according to the SRS resource set used for antenna switching; therefore, SRS antenna switching configuration is carried out on the specific terminal, so that the terminal with the number of transmitting antennas less than that of receiving antennas can obtain downlink channel information by utilizing channel reciprocity.
Drawings
Fig. 1 is a schematic diagram of antenna switching for a terminal having 2T4R capability;
fig. 2 is a schematic flowchart of a reference signal configuration method according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating an antenna switching method according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a first reference signal configuration method according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a second reference signal configuration method according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a third reference signal configuration method according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a reference signal configuration apparatus according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an antenna switching apparatus according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples.
As described above, in order to support a terminal whose number of transmission antennas is less than that of reception antennas, the NR designs an SRS antenna switching transmission scheme so that downlink channel information can be obtained by using channel reciprocity.
For example, for a terminal with 2T4R capability, in Release 15 (R15, Release 15)/Release 16 (16, Release 16), the base station is configured with at most 2 SRS resource sets for the terminal; each SRS resource set comprises two SRS resources which are transmitted in different symbols; there are two SRS ports per SRS resource.
The base station sends the SRS resource set configuration to the terminal; and the terminal performs SRS transmission according to the SRS resource set configuration.
Fig. 1 is a schematic diagram of antenna switching for a terminal having 2T4R capability; as shown in fig. 1, when the terminal needs to transmit the SRS, one of the SRSs is transmitted from two antenna ports of the terminal, and the other SRS is transmitted from the other two antenna ports of the terminal. Since the terminal with 2T4R capability has two transmission radio frequency channels, the terminal needs to perform physical antenna switching before transmitting one SRS to another SRS.
In Release 17 (R17, Release 16) multiple-in-multiple-out (MIMO) WID, it is proposed that SRS antenna switching needs to support an xTyR-capable terminal, where x denotes the number of transmission ports (i.e., transmission channels) and y denotes the number of reception ports (i.e., reception channels); x is {1,2,4} and y is {6,8 }. However, for the terminal of 4T6R, the number of transmission channels and the number of reception channels are not integer multiples, and the SRS antenna switching configuration method in R15/16 cannot be used. Therefore, how does the base station need to configure SRS for such terminals for antenna switching?
Based on the above problem, in the method provided in the embodiments of the present invention, a base station configures an SRS resource set for antenna switching; the terminal carries out SRS transmission according to SRS resource set configuration for antenna switching; wherein the SRS resource set includes: n SRS resources; and N is a positive integer greater than or equal to 1.
Fig. 2 is a schematic flowchart of a reference signal configuration method according to an embodiment of the present invention; as shown in fig. 2, the method is applied to a first communication device, which may be a base station, such as an NR; the method may include:
the set of SRS resources comprising: n SRS resources; and N is a positive integer greater than or equal to 1.
In an embodiment, before the step 201, the method further includes: and receiving an SRS configuration request sent by the terminal.
And the base station configures an SRS resource set for antenna switching according to the SRS configuration request.
The SRS configuration request includes: the antenna capability of the terminal; the method specifically comprises the following steps: the number of transmission ports (or transmission channels), the number of reception ports (or reception channels).
That is, the base station determines which xTyR capability the terminal has (x ═ {1,2,4}, y ═ 6,8}) based on the first information, that is, the base station determines specific x and y values.
For the case where x is 4 and y is 6 (x and y are not evenly divisible), that is, the terminal having the capability of 4 sending ports 6 receiving ports (4T6R), the method provided by the embodiment of the present invention may be applied.
An embodiment of the configuration is provided, where the N SRS resources include: a first SRS resource and a second SRS resource;
the first SRS resource includes: at least two first ports; the second SRS resource comprising: at least two second ports.
Specifically, the first SRS resource includes: four SRS ports; the second SRS resource comprising: four SRS ports.
Further, the antenna capability of the terminal is that the number of the transmitting ports (i.e., transmitting antennas) is 4, and the number of the receiving ports (i.e., receiving antennas) is 6, that is, the terminal is 4T 6R; that is, the set of SRS resources is for six antenna ports;
the first set of SRSs comprising: a first port combination; the first port combination comprises: four first SRS ports selected from the six antenna ports;
the second set of SRSs comprising: a second port combination; the second port combination comprises: four second SRS ports selected from the six antenna ports;
selecting the second port combination from at least one port combination to be selected through configuration of Radio Resource Control (RRC), media Access Control (MAC CE) or Downlink Control signaling (DCI);
and each port combination to be selected and the first port combination have at least one different port.
Specifically, the 6 antenna ports of the terminal are represented as: p ═ P0,p1,p2,p3,p4,p5}; the correspondence between 4 SRS ports (ports) of the first SRS resource (referred to as SRS resource #1) and 4 physical antenna ports can be expressed as: p1＝{p0,p1,p2,p3}；P1Namely the first port combination;
and the correspondence relationship between the 4 SRS ports and the 4 physical antenna ports of the second SRS resource (referred to as SRS resource #2) can be represented as one of the following: p2＝{p0,p1,p4,p5}、P2＝{p0,p2,p4,p5}、P2＝{p0,p3,p4,p5}、P2＝{p1,p2,p4,p5}、P2＝{p1,p3,p4,p5}、P2＝{p2,p3,p4,p5}；P2I.e. the above-mentioned candidate port combinations.
Here, 4 SRS ports refer to logical ports, and 4 physical antenna ports refer to actual antenna ports; the correspondence represents a correspondence between the logical port and the actual antenna port.
The specific SRS resource #2 adopts which antenna port combination, and the base station can decide through RRC, MAC CE or DCI configuration. For example, the configuration parameters Indicator 1,2, 3, 4, 5, and 6 correspond to the above 6 combinations, respectively.
Meanwhile, there are 2 ports between SRS resource #1 and SRS resource #2, which are repeated, and the repeated ports can be represented as: p ═ P1∩P2(ii) a P' includes two SRS ports corresponding to the same antenna port. The base station may determine Channel State Information (CSI) corresponding to two repeated ports in P' according to the received SRS transmitted based on the 2 SRS resources, respectively.
Specifically, the method further comprises:
determining Channel State Information (CSI) corresponding to the same port of the at least two first ports and the at least two second ports based on the first SRS and the second SRS; wherein the first SRS is transmitted based on the at least two first ports; the second SRS is transmitted based on the at least two second ports.
Specifically, the terminal receives the SRS resource set transmitted by the base station, and transmits the SRS according to the SRS port configured in the SRS resource set. The base station may determine CSI corresponding to the repeated ports (i.e., the 2 antenna ports in P') according to the received 2 SRSs. Specifically, the method may be implemented based on a preset algorithm, for example, two CSI are respectively calculated according to two received SRSs, and the two calculated CSIs are combined (for example, averaging processing).
Thus, the base station can fully utilize the signals sent by the 2 SRS resources on the two same antenna ports, and obtain more accurate and stable channel estimation for the two physical antenna ports.
For example, the base station indicates to the terminal through RRC, MAC CE, or DCI configuration parameter Indicator 1, and the terminal makes the corresponding relationship between 4 SRS ports of SRS resource #2 and 4 physical antenna ports P2＝{p0,p1,p4,p5}. The terminal transmits SRS based on SRS resource #1 and SRS based on SRS resource #2 to the base station, and the base station receives the two SRS and then transmits the SRS from p0、p1And combining the CSI obtained by the ports.
Another configuration embodiment is provided, in which the N SRS resources include: a third SRS resource and a fourth SRS resource; the third SRS resource comprising: at least two third ports; the fourth SRS resource including: at least two fourth ports;
the number of the third ports is integral multiple of the number of the fourth ports.
Specifically, the third SRS resource includes four SRS ports; the fourth SRS resource includes two SRS ports.
Specifically, the transmission power corresponding to the third SRS resource is an integer multiple of the transmission power corresponding to the fourth SRS resource.
Here, in consideration of SRS resource set level configuration transmission power related parameters in the related art, the transmission power of each SRS resource in the SRS resource set is the same; and, for the SRS resources larger than 1 SRS port, the transmission power of the SRS resources is equally divided over all SRS ports.
For the case that the number of the third ports is an integer multiple of the number of the fourth ports, in order to ensure that the base station side can fairly measure the channel quality corresponding to the 6 receiving antennas, it is necessary to ensure that the transmission power of each antenna is the same. That is, the transmission power of each SRS port of the third SRS resource and the fourth SRS resource is required to be the same.
Based on this, a method is provided in which the transmission power of a certain SRS resource is set to be half of another SRS resource so that the transmission power of each SRS port is the same. That is, the transmission power corresponding to the third SRS resource is an integer multiple of the transmission power corresponding to the fourth SRS resource.
The third SRS resource includes four SRS ports; the fourth SRS resource includes two SRS ports; the transmission power of the third SRS resource may be set as follows:
wherein, PCMAX,f,c(i) Representing a configured maximum output power of the terminal; pO_SRS,b,f,c(qs) Given by the higher layer parameter P0; mSRS,b,f,c(i) Represents the SRS bandwidth; alpha is alphaSRS,b,f,c(qs) Given by the high level parameter alpha；PLb,f,c(qd) Representing the downlink path loss; h isb,f,c(i, l) represents a power adjustment amount;μconfigured by Subcarrier spacing (SCS).
Setting the transmission power of the fourth SRS resource as:
specifically, each of the at least two SRS resources further includes: the corresponding transmission power of each SRS resource; the method further comprises the following steps: and transmitting the transmission power of the third SRS resource and the transmission power of the fourth SRS resource to the terminal.
The configuration method is similar to the SRS configuration method of other types of terminals, and the base station side is easy to realize.
Still another configuration embodiment is provided, in which the N SRS resources include: a fifth SRS resource, a sixth SRS resource, a seventh SRS resource;
the number of ports included in the fifth SRS resource, the number of ports included in the sixth SRS resource, and the number of ports included in the seventh SRS resource are equal, and the ports included in the fifth SRS resource, the ports included in the sixth SRS resource, and the seventh SRS resource are respectively associated with different antenna ports of a terminal.
Specifically, for a terminal of 4T6R, the fifth SRS resource includes two SRS ports; the sixth SRS resource includes two SRS ports; the seventh SRS resource includes two SRS ports.
Each SRS port of the SRS resource is associated to a different antenna port of the terminal, that is, two SRS ports included in the fifth SRS resource, two SRS ports included in the sixth SRS resource, and two SRS ports included in the seventh SRS resource are associated to different antenna ports of the terminal, respectively.
According to the configuration method, each SRS resource is transmitted only by adopting two SRS ports (namely two antenna ports) of the terminal, so that energy is saved.
Specifically, for the power calculation of the SRS resources with the same number of SRS ports (that is, the number of first ports included in the first SRS resource is the same as the number of second ports included in the second SRS resource), that is, the power calculation of each SRS resource may directly adopt the following formula:
wherein, PCMAX,f,c(i) Representing a configured maximum output power of the terminal; pO_SRS,b,f,c(qs) Given by the higher layer parameter P0; mSRS,b,f,c(i) Represents the SRS bandwidth; alpha is alphaSRS,b,f,c(qs) Given by the high level parameter alpha; PLb,f,c(qd) Representing the downlink path loss; h isb,f,c(i, l) represents a power adjustment amount;μconfigured by the SCS.
The method further comprises one of:
and transmitting the corresponding transmission power of the corresponding SRS resource to the terminal.
Correspondingly, the invention also provides an antenna switching method applied to the terminal.
Fig. 3 is a flowchart illustrating an antenna switching method according to an embodiment of the present invention; as shown in fig. 3, the antenna switching method is applied to a terminal (e.g., a mobile phone, a smart phone, a laptop, a tablet computer (PAD), etc.), and the method includes:
Specifically, after receiving the SRS resource set, the terminal may perform SRS transmission according to the SRS port configured in the SRS resource set and the power corresponding to the SRS port.
In an embodiment, the method further comprises: and step 300, receiving the configuration information of the SRS resource set.
In one embodiment, the N SRS resources include: a first SRS resource and a second SRS resource;
the first SRS resource includes: at least two first ports; the second SRS resource comprising: at least two second ports.
Specifically, the first SRS resource includes: four SRS ports; the second SRS resource comprising: four SRS ports.
For example, the antenna capability of the terminal is that the number of the transmitting ports is 4, the number of the receiving ports is 6, that is, the terminal is 4T 6R; that is, the set of SRS resources is for six antenna ports;
the first set of SRSs comprising: a first port combination; the first port combination comprises: four first SRS ports selected from the six antenna ports;
the second set of SRSs comprising: a second port combination; the second port combination comprises: four second SRS ports selected from the six antenna ports;
selecting the second port combination from at least one port combination to be selected through configuration of RRC, MAC CE or DCI;
and each port combination to be selected and the first port combination have at least one different port.
Specifically, the 6 antenna ports of the terminal are represented as: p ═ P0,p1,p2,p3,p4,p5}; the correspondence between 4 SRS ports (ports) of the first SRS resource (referred to as SRS resource #1) and 4 physical antenna ports can be expressed as: p1＝{p0,p1,p2,p3}；P1Namely the first port combination;
and the correspondence relationship between the 4 SRS ports of the second SRS resource (referred to as SRS resource #2) and the 4 physical antenna ports can be represented as one of the following: p2＝{p0,p1,p4,p5}、P2＝{p0,p2,p4,p5}、P2＝{p0,p3,p4,p5}、P2＝{p1,p2,p4,p5}、P2＝{p1,p3,p4,p5}、P2＝{p2,p3,p4,p5}；P2I.e. the above-mentioned candidate port combinations.
Here, 4 SRS ports refer to logical ports, and 4 physical antenna ports refer to actual antenna ports; the correspondence represents a correspondence between the logical port and the physical port.
The specific SRS resource #2 adopts which antenna port combination, and the base station can decide through RRC, MAC CE or DCI configuration. For example, the configuration parameters Indicator 1,2, 3, 4, 5, and 6 correspond to the above 6 combinations, respectively.
Meanwhile, there are 2 ports between SRS resource #1 and SRS resource #2, which are repeated, and the repeated ports can be represented as: p ═ P1∩P2(ii) a P' includes two SRS ports corresponding to the same antenna port. The base station may determine CSI corresponding to two repeated ports in P' according to the received SRS transmitted based on the 2 SRS resources, respectively.
Specifically, the method further comprises: transmitting a first SRS and a second SRS; wherein the first SRS is transmitted based on the at least two first ports; the second SRS is transmitted based on the at least two second ports; the first SRS and the second SRS are used for determining CSI corresponding to the same port of the at least two first ports and the at least two second ports.
In another embodiment, the N SRS resources include: a third SRS resource and a fourth SRS resource; the third SRS resource comprising: at least two third ports; the fourth SRS resource including: at least two fourth ports;
the number of the third ports is integral multiple of the number of the fourth ports.
Specifically, the third SRS resource includes four SRS ports; the fourth SRS resource includes two SRS ports.
Specifically, the transmission power corresponding to the third SRS resource is an integer multiple of the transmission power corresponding to the fourth SRS resource.
Here, in consideration of SRS resource set level configuration transmission power related parameters in the related art, the transmission power of each SRS resource in the SRS resource set is the same; and, for the SRS resources larger than 1 SRS port, the transmission power of the SRS resources is equally divided over all SRS ports.
For the case that the number of the third ports is an integer multiple of the number of the fourth ports, in order to ensure that the base station side can fairly measure the channel quality corresponding to the 6 receiving antennas, it is necessary to ensure that the transmission power of each antenna is the same. That is, the transmission power of each SRS port of the third SRS resource and the fourth SRS resource is required to be the same.
Based on this, a method is provided in which the transmission power of a certain SRS resource is set to be half of another SRS resource so that the transmission power of each SRS port is the same. That is, the transmission power corresponding to the third SRS resource is an integer multiple of the transmission power corresponding to the fourth SRS resource.
Specifically, each of the at least two SRS resources further includes: the corresponding transmission power of each SRS resource; the method further comprises the following steps: receiving a transmission power of the third SRS resource and a transmission power of the fourth SRS resource from a base station.
The calculation of the transmission power is specifically described in the method shown in fig. 2, and is not described herein again.
In another embodiment, the N SRS resources include: a fifth SRS resource, a sixth SRS resource, a seventh SRS resource;
the number of ports included in the fifth SRS resource, the number of ports included in the sixth SRS resource, and the number of ports included in the seventh SRS resource are equal, and the ports included in the fifth SRS resource, the ports included in the sixth SRS resource, and the ports included in the seventh SRS resource are respectively associated with different antenna ports of a terminal.
Specifically, the fifth SRS resource includes two SRS ports; the sixth SRS resource includes two SRS ports; the seventh SRS resource includes two SRS ports.
Each SRS port of the SRS resource is associated to a different antenna port of the terminal, that is, two SRS ports included in the fifth SRS resource, two SRS ports included in the sixth SRS resource, and two SRS ports included in the seventh SRS resource are associated to different antenna ports of the terminal, respectively.
According to the configuration method, each SRS resource is transmitted only by adopting two SRS ports (namely two antenna ports) of the terminal, so that energy is saved.
The related configuration of the SRS resource set is already described in the method shown in fig. 2, and is not repeated here.
The above method is further explained by taking a terminal with 4T6R capability as an example.
Fig. 4 is a schematic diagram of a first reference signal configuration method according to an embodiment of the present invention; as shown in fig. 4, the base station configures an SRS resource set (SRS resource set) for antenna switching for the terminal; wherein the SRS resource set comprises two SRS resources; the two SRS resources are respectively denoted as SRS resource #1 (equivalent to a first SRS resource) and SRS resource #2 (equivalent to a second SRS resource); both SRS resource #1 and SRS resource #2 have 4 ports.
Here, it is assumed that 6 antenna ports of the terminal are represented as: p ═ P0,p1,p2,p3,p4,p5}；
The correspondence between 4 SRS ports of SRS resource #1 and 4 antenna ports (physical layer) of the terminal can be expressed as: p1＝{p0,p1,p2,p3}；
Accordingly, the correspondence relationship between the 4 SRS ports of SRS resource #2 and the 4 antenna ports of the terminal may be represented as at least one of:
P2＝{p0,p1,p4,p5}、P2＝{p0,p2,p4,p5}、P2＝{p0,p3,p4,p5}、P2＝{p1,p2,p4,p5}、
P2＝{p1,p3,p4,p5}、P2＝{p2,p3,p4,p5}。
specifically, which antenna port combination is adopted by SRS resource #2, the base station can be determined by RRC, MAC CE or DCI configuration; for example, the configuration parameters Indicator 1,2, 3, 4, 5, and 6 correspond to the above 6 combinations, respectively. The base station indicates the terminal through RRC, MAC CE or DCI configuration parameter Indicator 1, and the terminal enables the corresponding relation of 4 SRS ports and 4 antenna ports of SRS resource #2 to be P according to the indication2＝{p0,p1,p4,p5}。
As can be seen from the figure, P at SRS resource #11P with SRS resource #22There are 2 port repetitions in between, and the repetition port can be expressed as: p ═ P1∩P2. The base station may calculate CSI (channel state information) corresponding to the 2 ports in P' according to the received 2 SRSs. Specifically, the terminal transmits SRS signal 1 (transmitted based on SRS resource #1) and SRS signal 2 (transmitted based on SRS resource #2) to the base station, and the base station calculates p after receiving the SRS0、p1The CSI corresponding to the port (p can be calculated from SRS signal 1 and SRS signal 2 respectively)0、p1The CSI obtained by the port is then p0、p1The CSI obtained by the ports is combined).
The base station fully utilizes the SRS sent by the 2 SRS resources on the two same physical antenna ports of the terminal to obtain more accurate and stable channel estimation for the two physical antenna ports of the terminal.
Fig. 5 is a schematic diagram of a first reference signal configuration method according to an embodiment of the present invention; as shown in fig. 5, each SRS resource set configured by the base station for the terminal for antenna switching has 2 SRS resources; here, SRS resource #3 (corresponding to the third SRS resource) has 4 SRS ports, and SRS resource #4 (corresponding to the fourth SRS resource) has 2 SRS ports.
4 SRS ports of SRS resource #3 correspond to 4 physical antenna ports of the terminal; the 2 SRS ports of SRS resource #4 correspond to the remaining 2 physical antenna ports of the terminal.
Further, in order to ensure that the base station side can fairly measure the channel quality corresponding to the 6 receiving antennas, it is necessary to ensure that the transmission power of each antenna port is the same.
Setting the transmission power of SRS resource #3 as:
wherein, PCMAX,f,c(i) Representing a configured maximum output power of the terminal; pO_SRS,b,f,c(qs) Given by the higher layer parameter P0; mSRS,b,f,c(i) Represents the SRS bandwidth; alpha is alphaSRS,b,f,c(qs) Given by the high level parameter alpha; PLb,f,c(qd) Representing the downlink path loss; h isb,f,c(i, l) represents a power adjustment amount;μconfigured by the SCS.
Setting the transmission power of SRS resource #4 as:
fig. 6 is a schematic diagram of a first reference signal configuration method according to an embodiment of the present invention; as shown in fig. 6, each SRS resource set configured by the base station for the terminal to perform antenna switching has 3 SRS resources, and each of SRS resource #5 (corresponding to the fifth SRS resource), SRS resource #6 (corresponding to the sixth SRS resource), and SRS resource #7 (corresponding to the seventh SRS resource) has 2 SRS ports.
The 2 SRS ports of SRS resource #5, the 2 SRS ports of SRS resource #6, and the 2 SRS ports of SRS resource # are respectively associated with 2 antenna ports different from the terminal.
Assuming that the set of 6 antenna ports of a terminal is denoted as P, the sets of antenna ports of corresponding terminals, SRS resource #5, SRS resource #6, and SRS resource #7, are respectively denoted as P5、P6、P7Wherein the number of elements per antenna port set is 2, and P1∪P2∪P3＝P。
Although the SRS resource overhead is relatively large, the method needs to occupy 5 symbols to complete the transmission of antenna switching; and because only 2 antennas are adopted for transmission each time, the SRS transmission power is backed off by 3dB, and the accuracy of channel estimation is influenced.
In practical application, any one of the three methods can be selected to realize reference signal configuration based on needs, so as to realize SRS antenna switching.
Fig. 7 is a schematic structural diagram of a reference signal configuration apparatus according to an embodiment of the present invention; as shown in fig. 7, the apparatus is applied to a base station, and includes:
a configuration module, configured to configure an SRS resource set for antenna switching; the set of SRS resources comprising: n SRS resources; and N is a positive integer greater than or equal to 1.
Specifically, the N SRS resources include: a first SRS resource and a second SRS resource;
the first SRS resource includes: at least two first ports; the second SRS resource comprising: at least two second ports.
Specifically, the first SRS resource includes: four SRS ports; the second SRS resource comprising: four SRS ports.
Specifically, the set of SRS resources is for six antenna ports;
the first set of SRSs comprising: a first port combination; the first port combination comprises: four first SRS ports selected from the six antenna ports;
the second set of SRSs comprising: a second port combination; the second port combination comprises: four second SRS ports selected from the six antenna ports;
selecting the second port combination from at least one port combination to be selected through configuration of RRC, MAC CE or DCI;
and each port combination to be selected and the first port combination have at least one different port.
Specifically, the apparatus further comprises: the processing module is used for determining CSI corresponding to the same port of the at least two first ports and the at least two second ports based on the first SRS and the second SRS; wherein the first SRS is transmitted based on the at least two first ports; the second SRS is transmitted based on the at least two second ports.
The device further comprises: a receiving module, configured to receive the first SRS and the second SRS.
In another embodiment, the N SRS resources include: a third SRS resource and a fourth SRS resource; the third SRS resource comprising: at least two third ports; the fourth SRS resource including: at least two fourth ports;
the number of the third ports is an integral multiple of the number of the fourth ports.
Specifically, the third SRS resource includes four SRS ports; the fourth SRS resource includes two SRS ports.
Specifically, the transmission power corresponding to the third SRS resource is an integer multiple of the transmission power corresponding to the fourth SRS resource.
In another embodiment, the N SRS resources include: a fifth SRS resource, a sixth SRS resource, a seventh SRS resource;
the number of ports included in the fifth SRS resource, the number of ports included in the sixth SRS resource, and the number of ports included in the seventh SRS resource are equal, and the ports included in the fifth SRS resource, the ports included in the sixth SRS resource, and the ports included in the seventh SRS resource are respectively associated with different antenna ports of a terminal.
Specifically, the fifth SRS resource includes two SRS ports; the sixth SRS resource includes two SRS ports; the seventh SRS resource includes two SRS ports.
It should be noted that: in the reference signal configuration apparatus provided in the foregoing embodiment, when implementing the corresponding reference signal configuration method, only the division of each program module is illustrated, and in practical applications, the processing allocation may be completed by different program modules according to needs, that is, the internal structure of the base station is divided into different program modules, so as to complete all or part of the processing described above. In addition, the apparatus provided by the above embodiment and the embodiment of the corresponding method belong to the same concept, and the specific implementation process thereof is described in the method embodiment, which is not described herein again.
Fig. 8 is a schematic structural diagram of an antenna switching apparatus according to an embodiment of the present invention; as shown in fig. 8, the apparatus is applied to a terminal, and the apparatus includes:
a sending module, configured to send an SRS according to an SRS resource set used for antenna switching; the set of SRS resources comprising: n SRS resources; and N is a positive integer greater than or equal to 1.
Correspondingly, the device further comprises: a receiving module, configured to receive configuration information of an SRS resource set for antenna switching.
In an embodiment, the N SRS resources include: a first SRS resource and a second SRS resource;
the first SRS resource includes: at least two first ports; the second SRS resource comprising: at least two second ports.
Specifically, the first SRS resource includes: four SRS ports; the second SRS resource comprising: four SRS ports.
Specifically, the set of SRS resources is for six antenna ports;
the first set of SRSs comprising: a first port combination; the first port combination comprises: four first SRS ports selected from the six antenna ports;
the second set of SRSs comprising: a second port combination; the second port combination comprises: four second SRS ports selected from the six antenna ports;
the second port combination is selected from at least one port combination to be selected through configuration of RRC, MAC CE or DCI;
and each port combination to be selected and the first port combination have at least one different port.
Specifically, the transmitting module is further configured to transmit a first SRS and a second SRS; wherein the first SRS is transmitted based on the at least two first ports; the second SRS is transmitted based on the at least two second ports; the first SRS and the second SRS are used for determining CSI corresponding to the same port of the at least two first ports and the at least two second ports.
In another embodiment, the N SRS resources include: a third SRS resource and a fourth SRS resource; the third SRS resource comprising: at least two third ports; the fourth SRS resource including: at least two fourth ports;
the number of the third ports is an integral multiple of the number of the fourth ports.
Specifically, the third SRS resource includes four SRS ports; the fourth SRS resource includes two SRS ports.
Specifically, the transmission power corresponding to the third SRS resource is an integer multiple of the transmission power corresponding to the fourth SRS resource.
In another embodiment, the N SRS resources include: a fifth SRS resource, a sixth SRS resource, a seventh SRS resource;
the number of ports included in the fifth SRS resource, the number of ports included in the sixth SRS resource, and the number of ports included in the seventh SRS resource are equal, and the ports included in the fifth SRS resource, the ports included in the sixth SRS resource, and the ports included in the seventh SRS resource are respectively associated with different antenna ports of a terminal.
Specifically, the fifth SRS resource includes two SRS ports; the sixth SRS resource includes two SRS ports; the seventh SRS resource includes two SRS ports.
It should be noted that: in the antenna switching apparatus provided in the foregoing embodiment, when implementing the corresponding antenna switching method, only the division of each program module is taken as an example, and in practical applications, the processing distribution may be completed by different program modules according to needs, that is, the internal structure of the terminal is divided into different program modules, so as to complete all or part of the processing described above. In addition, the apparatus provided by the above embodiment and the embodiment of the corresponding method belong to the same concept, and the specific implementation process thereof is described in the method embodiment, which is not described herein again.
Fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the present invention, and as shown in fig. 9, the communication device 90 includes: a processor 901 and a memory 902 for storing a computer program operable on the processor;
the processor 901 is configured to execute, when running the computer program, the following when the communication device is applied to a base station: configuring a set of SRS resources for antenna switching; the set of SRS resources comprising: n SRS resources; and N is a positive integer greater than or equal to 1. Specifically, the base station may execute the method shown in fig. 2, and belongs to the same concept as the embodiment of the reference information configuration method shown in fig. 2, and the specific implementation process thereof is described in detail in the embodiment of the method and is not described herein again.
When the communication device is applied to a terminal, the processor 901 is configured to execute, when running the computer program, the following steps: transmitting an SRS according to an SRS resource set for antenna switching; the set of SRS resources comprising: n SRS resources; and N is a positive integer greater than or equal to 1. Specifically, the terminal may execute the method shown in fig. 3, which belongs to the same concept as the method embodiment shown in fig. 3, and the specific implementation process thereof is described in detail in the method embodiment and is not described herein again.
In practical applications, the communication device 90 may further include: at least one network interface 903. The various components of the communication device 90 are coupled together by a bus system 904. It is understood that the bus system 904 is used to enable communications among the components. The bus system 904 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration the various buses are labeled as bus system 904 in figure 9. The number of the processors 901 may be at least one. The network interface 903 is used for communication between the communication device 90 and other devices in a wired or wireless manner.
The memory 902 in embodiments of the present invention is used to store various types of data to support the operation of the communication device 90.
The method disclosed in the above embodiments of the present invention may be applied to the processor 901, or implemented by the processor 901. The processor 901 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 901. The Processor 901 may be a general purpose Processor, a DiGital Signal Processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. Processor 901 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the memory 902, and the processor 901 reads the information in the memory 902 and performs the steps of the aforementioned methods in combination with its hardware.
In an exemplary embodiment, the communication Device 90 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, Micro Controllers (MCUs), microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored;
when the stored computer program is applied to a base station, the computer program is executed by a processor to perform: configuring a set of SRS resources for antenna switching; the set of SRS resources comprising: n SRS resources; and N is a positive integer greater than or equal to 1. Specifically, the base station may execute the method shown in fig. 2, and belongs to the same concept as the embodiment of the reference information configuration method shown in fig. 2, and the specific implementation process thereof is described in detail in the embodiment of the method and is not described herein again.
When the stored computer program is applied to a terminal, the computer program is executed by a processor to execute: transmitting an SRS according to an SRS resource set for antenna switching; the set of SRS resources comprising: n SRS resources; and N is a positive integer greater than or equal to 1. Specifically, the terminal may execute the method shown in fig. 3, which belongs to the same concept as the method embodiment shown in fig. 3, and the specific implementation process thereof is described in detail in the method embodiment and is not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.
It should be noted that: in the present examples, "first", "second", etc. are used for distinguishing similar objects and are not necessarily used for describing a particular order or sequence.
In addition, the technical solutions described in the embodiments of the present invention may be arbitrarily combined without conflict.
In the present examples, a plurality means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (24)
1. A reference signal configuration method is applied to a base station, and the method comprises the following steps:
configuring a channel Sounding Reference Signal (SRS) resource set for antenna switching; the set of SRS resources comprising: n SRS resources; and N is a positive integer greater than or equal to 1.
2. The method of claim 1, wherein the N SRS resources comprise: a first SRS resource and a second SRS resource;
the first SRS resource includes: at least two first ports; the second SRS resource comprising: at least two second ports.
3. The method of claim 2, wherein the first SRS resource comprises: four SRS ports; the second SRS resource comprising: four SRS ports.
4. The method of claim 3, wherein the set of SRS resources are for six antenna ports;
the first set of SRSs comprising: a first port combination; the first port combination comprises: four first SRS ports selected from the six antenna ports;
the second set of SRSs comprising: a second port combination; the second port combination comprises: four second SRS ports selected from the six antenna ports;
selecting the second port combination from at least one port combination to be selected through the configuration of a Radio Resource Control (RRC), a Media Access Control (MAC) Control Element (CE) or a downlink control signaling (DCI);
and each port combination to be selected and the first port combination have at least one different port.
5. The method of claim 2, further comprising:
determining Channel State Information (CSI) corresponding to the same port of the at least two first ports and the at least two second ports based on a first SRS and a second SRS; wherein the first SRS is transmitted based on the at least two first ports; the second SRS is transmitted based on the at least two second ports.
6. The method of claim 1, wherein the N SRS resources comprise: a third SRS resource and a fourth SRS resource; the third SRS resource comprising: at least two third ports; the fourth SRS resource including: at least two fourth ports;
the number of the third ports is an integral multiple of the number of the fourth ports.
7. The method of claim 6, wherein the third SRS resource includes four SRS ports; the fourth SRS resource includes two SRS ports.
8. The method of claim 7, wherein the transmission power for the third SRS resource is an integer multiple of the transmission power for the fourth SRS resource.
9. The method of claim 1, wherein the N SRS resources comprise: a fifth SRS resource, a sixth SRS resource, a seventh SRS resource;
the number of ports included in the fifth SRS resource, the number of ports included in the sixth SRS resource, and the number of ports included in the seventh SRS resource are equal, and the ports included in the fifth SRS resource, the ports included in the sixth SRS resource, and the ports included in the seventh SRS resource are respectively associated with different antenna ports of a terminal.
10. The method of claim 9, wherein the fifth SRS resource comprises two SRS ports; the sixth SRS resource includes two SRS ports; the seventh SRS resource includes two SRS ports.
11. An antenna switching method, applied to a terminal, the method comprising:
transmitting an SRS according to an SRS resource set for antenna switching; the set of SRS resources comprising: n SRS resources; and N is a positive integer greater than or equal to 1.
12. The method of claim 11, wherein the N SRS resources comprise: a first SRS resource and a second SRS resource;
the first SRS resource includes: at least two first ports; the second SRS resource comprising: at least two second ports.
13. The method of claim 12, wherein the first SRS resource comprises: four SRS ports; the second SRS resource comprising: four SRS ports.
14. The method of claim 13, wherein the set of SRS resources is for six antenna ports;
the first set of SRSs comprising: a first port combination; the first port combination comprises: four first SRS ports selected from the six antenna ports;
the second set of SRSs comprising: a second port combination; the second port combination comprises: four second SRS ports selected from the six antenna ports;
the second port combination is selected from at least one port combination to be selected through the configuration of a Radio Resource Control (RRC), a Media Access Control (MAC) Control Element (CE) or a downlink control signaling (DCI);
and each port combination to be selected and the first port combination have at least one different port.
15. The method of claim 12, further comprising:
transmitting a first SRS and a second SRS; wherein the first SRS is transmitted based on the at least two first ports; the second SRS is transmitted based on the at least two second ports; the first SRS and the second SRS are used for determining CSI corresponding to the same port of the at least two first ports and the at least two second ports.
16. The method of claim 11, wherein the N SRS resources comprise: a third SRS resource and a fourth SRS resource; the third SRS resource comprising: at least two third ports; the fourth SRS resource including: at least two fourth ports;
the number of the third ports is an integral multiple of the number of the fourth ports.
17. The method of claim 16, wherein the third SRS resource comprises four SRS ports; the fourth SRS resource includes two SRS ports.
18. The method of claim 17, wherein the transmission power associated with the third SRS resource is an integer multiple of the transmission power associated with the fourth SRS resource.
19. The method of claim 11, wherein the N SRS resources comprise: a fifth SRS resource, a sixth SRS resource, a seventh SRS resource;
the number of ports included in the fifth SRS resource, the number of ports included in the sixth SRS resource, and the number of ports included in the seventh SRS resource are equal, and the ports included in the fifth SRS resource, the ports included in the sixth SRS resource, and the ports included in the seventh SRS resource are respectively associated with different antenna ports of a terminal.
20. The method of claim 19, wherein the fifth SRS resource comprises two SRS ports; the sixth SRS resource includes two SRS ports; the seventh SRS resource includes two SRS ports.
21. A reference signal configuration apparatus, applied to a base station, the apparatus comprising:
a configuration module, configured to configure a set of channel Sounding Reference Signal (SRS) resources for antenna switching; the set of SRS resources comprising: n SRS resources; and N is a positive integer greater than or equal to 1.
22. An antenna switching device, applied to a terminal, the device comprising:
a sending module, configured to send an SRS according to an SRS resource set used for antenna switching; the set of SRS resources comprising: n SRS resources; and N is a positive integer greater than or equal to 1.
23. A communication device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the steps of the method of any one of claims 1 to 10 are implemented when the program is executed by the processor; alternatively, the first and second electrodes may be,
the processor, when executing the program, performs the steps of the method of any of claims 11 to 20.
24. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 10; alternatively, the first and second electrodes may be,
the computer program when executed by a processor implements the steps of the method of any one of claims 11 to 20.
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